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java.lang.NullPointerException: null	at com.tridion.dynamiccontent.publication.PublicationMapping.(PublicationMapping.java:38)	at com.tridion.dynamiccontent.DynamicMappingsRetriever.getPublicationMapping(DynamicMappingsRetriever.java:28)	at com.sdl.webapp.tridion.TridionLocalizationResolver.getPublicationMappingData(TridionLocalizationResolver.java:23)	at com.sdl.webapp.tridion.AbstractTridionLocalizationResolver.getLocalization(AbstractTridionLocalizationResolver.java:61)	at com.sdl.webapp.common.impl.interceptor.LocalizationResolverInterceptor.preHandle(LocalizationResolverInterceptor.java:78)	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:914)	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:292)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)	at com.tridion.ambientdata.web.AbstractAmbientDataServletFilter.doFilter(AbstractAmbientDataServletFilter.java:286)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:240)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:207)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:528)	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1099)	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1520)	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1476)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)	at java.lang.Thread.run(Thread.java:745)